When repurposing old clothing in craft and DIY projects, it's easy to separate the wide pieces of pure fabric for creative fodder. But then, your often stuck with the rest: collars, lapels, buttons, cuffs, waistbands, etc.
Except, if you cut things just so, these "extras" can often be exactly what you need for some seriously clever reuse. Like this shirt cuff wallet: it's exactly the right size, and all the seams are already set. All you need to do is just add the pockets.